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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56e32659a26f8ac37f8335ab3e9a05ae1f0b9efa5a0ba063bb025441c2716123' 
  AND token = 'sF1HEcamWO7ThHCEzsm7RttABO9MoszRfNJi6EmZAR8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}